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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
commitc68d0fa2d88fc2134a38d99e7e944828384a7671 (patch)
tree6596943bd1c77f18d6e49d4153ddd3f3d67b49f5 /libpthread/nptl/pthreadP.h
parent9a03e98a3b418f33c347a6023e9320f3a42cb9e4 (diff)
libpthread/nptl: core of the "Native Posix Threading Library" for uClibc
targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/pthreadP.h')
-rw-r--r--libpthread/nptl/pthreadP.h466
1 files changed, 466 insertions, 0 deletions
diff --git a/libpthread/nptl/pthreadP.h b/libpthread/nptl/pthreadP.h
new file mode 100644
index 000000000..45222f45e
--- /dev/null
+++ b/libpthread/nptl/pthreadP.h
@@ -0,0 +1,466 @@
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _PTHREADP_H
+#define _PTHREADP_H 1
+
+#include <pthread.h>
+#include <setjmp.h>
+#include <stdbool.h>
+#include <sys/syscall.h>
+#include "descr.h"
+#include <tls.h>
+#include <lowlevellock.h>
+#include <bits/stackinfo.h>
+#include <internaltypes.h>
+#include <pthread-functions.h>
+#include <atomic.h>
+
+
+/* Atomic operations on TLS memory. */
+#ifndef THREAD_ATOMIC_CMPXCHG_VAL
+# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
+ atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
+#endif
+
+#ifndef THREAD_ATOMIC_BIT_SET
+# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
+ atomic_bit_set (&(descr)->member, bit)
+#endif
+
+
+/* Adaptive mutex definitions. */
+#ifndef MAX_ADAPTIVE_COUNT
+# define MAX_ADAPTIVE_COUNT 100
+#endif
+
+
+/* Internal variables. */
+
+
+/* Default stack size. */
+extern size_t __default_stacksize attribute_hidden;
+
+/* Size and alignment of static TLS block. */
+extern size_t __static_tls_size attribute_hidden;
+extern size_t __static_tls_align_m1 attribute_hidden;
+
+/* Flag whether the machine is SMP or not. */
+extern int __is_smp attribute_hidden;
+
+/* Thread descriptor handling. */
+extern list_t __stack_user;
+hidden_proto (__stack_user)
+
+/* Attribute handling. */
+extern struct pthread_attr *__attr_list attribute_hidden;
+extern lll_lock_t __attr_list_lock attribute_hidden;
+
+/* First available RT signal. */
+extern int __current_sigrtmin attribute_hidden;
+/* Last available RT signal. */
+extern int __current_sigrtmax attribute_hidden;
+
+/* Concurrency handling. */
+extern int __concurrency_level attribute_hidden;
+
+/* Thread-local data key handling. */
+extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
+hidden_proto (__pthread_keys)
+
+/* Number of threads running. */
+extern unsigned int __nptl_nthreads attribute_hidden;
+
+/* The library can run in debugging mode where it performs a lot more
+ tests. */
+extern int __pthread_debug attribute_hidden;
+/** For now disable debugging support. */
+#if 0
+# define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
+# define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
+# define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
+#else
+# define DEBUGGING_P 0
+/* Simplified test. This will not catch all invalid descriptors but
+ is better than nothing. And if the test triggers the thread
+ descriptor is guaranteed to be invalid. */
+# define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
+# define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
+#endif
+
+
+/* Cancellation test. */
+#define CANCELLATION_P(self) \
+ do { \
+ int cancelhandling = THREAD_GETMEM (self, cancelhandling); \
+ if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
+ { \
+ THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
+ __do_cancel (); \
+ } \
+ } while (0)
+
+
+extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
+ __cleanup_fct_attribute __attribute ((__noreturn__))
+#if !defined SHARED && !defined IS_IN_libpthread
+ weak_function
+#endif
+ ;
+extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
+ __cleanup_fct_attribute __attribute ((__noreturn__))
+#ifndef SHARED
+ weak_function
+#endif
+ ;
+extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
+ __cleanup_fct_attribute;
+extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
+ __cleanup_fct_attribute;
+#if defined NOT_IN_libc && defined IS_IN_libpthread
+hidden_proto (__pthread_unwind)
+hidden_proto (__pthread_unwind_next)
+hidden_proto (__pthread_register_cancel)
+hidden_proto (__pthread_unregister_cancel)
+# ifdef SHARED
+extern void attribute_hidden pthread_cancel_init (void);
+# endif
+#endif
+
+
+/* Called when a thread reacts on a cancellation request. */
+static inline void
+__attribute ((noreturn, always_inline))
+__do_cancel (void)
+{
+ struct pthread *self = THREAD_SELF;
+
+ /* Make sure we get no more cancellations. */
+ THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
+
+ __pthread_unwind ((__pthread_unwind_buf_t *)
+ THREAD_GETMEM (self, cleanup_jmp_buf));
+}
+
+
+/* Set cancellation mode to asynchronous. */
+#define CANCEL_ASYNC() \
+ __pthread_enable_asynccancel ()
+/* Reset to previous cancellation mode. */
+#define CANCEL_RESET(oldtype) \
+ __pthread_disable_asynccancel (oldtype)
+
+#if !defined NOT_IN_libc
+/* Same as CANCEL_ASYNC, but for use in libc.so. */
+# define LIBC_CANCEL_ASYNC() \
+ __libc_enable_asynccancel ()
+/* Same as CANCEL_RESET, but for use in libc.so. */
+# define LIBC_CANCEL_RESET(oldtype) \
+ __libc_disable_asynccancel (oldtype)
+# define LIBC_CANCEL_HANDLED() \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__libc_enable_asynccancel"); \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__libc_disable_asynccancel")
+#elif defined NOT_IN_libc && defined IS_IN_libpthread
+# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
+# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
+# define LIBC_CANCEL_HANDLED() \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__pthread_enable_asynccancel"); \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__pthread_disable_asynccancel")
+#elif defined NOT_IN_libc && defined IS_IN_librt
+# define LIBC_CANCEL_ASYNC() \
+ __librt_enable_asynccancel ()
+# define LIBC_CANCEL_RESET(val) \
+ __librt_disable_asynccancel (val)
+# define LIBC_CANCEL_HANDLED() \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__librt_enable_asynccancel"); \
+ __asm (".globl " __USER_LABEL_PREFIX__ "__librt_disable_asynccancel")
+#else
+# define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
+# define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
+# define LIBC_CANCEL_HANDLED() /* Nothing. */
+#endif
+
+/* The signal used for asynchronous cancelation. */
+#define SIGCANCEL __SIGRTMIN
+
+
+/* Signal needed for the kernel-supported POSIX timer implementation.
+ We can reuse the cancellation signal since we can distinguish
+ cancellation from timer expirations. */
+#define SIGTIMER SIGCANCEL
+
+
+/* Signal used to implement the setuid et.al. functions. */
+#define SIGSETXID (__SIGRTMIN + 1)
+
+/* Used to communicate with signal handler. */
+extern struct xid_command *__xidcmd attribute_hidden;
+
+
+/* Internal prototypes. */
+
+/* Thread list handling. */
+extern struct pthread *__find_in_stack_list (struct pthread *pd)
+ attribute_hidden internal_function;
+
+/* Deallocate a thread's stack after optionally making sure the thread
+ descriptor is still valid. */
+extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
+
+/* Free allocated stack. */
+extern void __deallocate_stack (struct pthread *pd)
+ attribute_hidden internal_function;
+
+/* Mark all the stacks except for the current one as available. This
+ function also re-initializes the lock for the stack cache. */
+extern void __reclaim_stacks (void) attribute_hidden;
+
+/* Make all threads's stacks executable. */
+extern int __make_stacks_executable (void **stack_endp)
+ internal_function attribute_hidden;
+
+/* longjmp handling. */
+extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
+#if defined NOT_IN_libc && defined IS_IN_libpthread
+hidden_proto (__pthread_cleanup_upto)
+#endif
+
+
+/* Functions with versioned interfaces. */
+extern int __pthread_create_2_1 (pthread_t *newthread,
+ const pthread_attr_t *attr,
+ void *(*start_routine) (void *), void *arg);
+extern int __pthread_create_2_0 (pthread_t *newthread,
+ const pthread_attr_t *attr,
+ void *(*start_routine) (void *), void *arg);
+extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
+extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
+
+
+/* Event handlers for libthread_db interface. */
+extern void __nptl_create_event (void);
+extern void __nptl_death_event (void);
+hidden_proto (__nptl_create_event)
+hidden_proto (__nptl_death_event)
+
+/* Register the generation counter in the libpthread with the libc. */
+#ifdef TLS_MULTIPLE_THREADS_IN_TCB
+extern void __libc_pthread_init (unsigned long int *ptr,
+ void (*reclaim) (void),
+ const struct pthread_functions *functions)
+ internal_function;
+#else
+extern int *__libc_pthread_init (unsigned long int *ptr,
+ void (*reclaim) (void),
+ const struct pthread_functions *functions)
+ internal_function;
+
+/* Variable set to a nonzero value if more than one thread runs or ran. */
+extern int __pthread_multiple_threads attribute_hidden;
+/* Pointer to the corresponding variable in libc. */
+extern int *__libc_multiple_threads_ptr attribute_hidden;
+#endif
+
+/* Find a thread given its TID. */
+extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden
+#ifdef SHARED
+;
+#else
+weak_function;
+#define __find_thread_by_id(tid) \
+ (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
+#endif
+
+extern void __pthread_init_static_tls (struct link_map *) attribute_hidden;
+
+
+/* Namespace save aliases. */
+extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
+ struct sched_param *param);
+extern int __pthread_setschedparam (pthread_t thread_id, int policy,
+ const struct sched_param *param);
+extern int __pthread_setcancelstate (int state, int *oldstate);
+extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
+ __const pthread_mutexattr_t *__mutexattr);
+extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
+ __const pthread_mutexattr_t *__mutexattr)
+ attribute_hidden;
+extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
+extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex)
+ attribute_hidden;
+extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
+extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
+extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex)
+ attribute_hidden;
+extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
+ attribute_hidden internal_function;
+extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
+extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex)
+ attribute_hidden;
+extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
+ int __decr)
+ attribute_hidden internal_function;
+extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
+extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
+extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
+extern int __pthread_attr_destroy (pthread_attr_t *attr);
+extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
+ int *detachstate);
+extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
+ int detachstate);
+extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
+ int *inherit);
+extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
+extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
+ struct sched_param *param);
+extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
+ const struct sched_param *param);
+extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
+ int *policy);
+extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
+extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
+extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
+extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
+ __attr, void **__restrict __stackaddr);
+extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
+ void *__stackaddr);
+extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
+ __attr,
+ size_t *__restrict __stacksize);
+extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
+ size_t __stacksize);
+extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
+ void **__restrict __stackaddr,
+ size_t *__restrict __stacksize);
+extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
+ size_t __stacksize);
+extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+ __const pthread_rwlockattr_t *__restrict
+ __attr);
+extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
+extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
+extern int __pthread_cond_broadcast (pthread_cond_t *cond);
+extern int __pthread_cond_destroy (pthread_cond_t *cond);
+extern int __pthread_cond_init (pthread_cond_t *cond,
+ const pthread_condattr_t *cond_attr);
+extern int __pthread_cond_signal (pthread_cond_t *cond);
+extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
+extern int __pthread_cond_timedwait (pthread_cond_t *cond,
+ pthread_mutex_t *mutex,
+ const struct timespec *abstime);
+extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
+extern int __pthread_condattr_init (pthread_condattr_t *attr);
+extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
+extern int __pthread_key_create_internal (pthread_key_t *key,
+ void (*destr) (void *));
+extern void *__pthread_getspecific (pthread_key_t key);
+extern void *__pthread_getspecific_internal (pthread_key_t key);
+extern int __pthread_setspecific (pthread_key_t key, const void *value);
+extern int __pthread_setspecific_internal (pthread_key_t key,
+ const void *value);
+extern int __pthread_once (pthread_once_t *once_control,
+ void (*init_routine) (void));
+extern int __pthread_once_internal (pthread_once_t *once_control,
+ void (*init_routine) (void));
+extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
+ void (*child) (void));
+extern pthread_t __pthread_self (void);
+extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
+extern int __pthread_kill (pthread_t threadid, int signo);
+extern void __pthread_exit (void *value);
+extern int __pthread_setcanceltype (int type, int *oldtype);
+extern int __pthread_enable_asynccancel (void) attribute_hidden;
+extern void __pthread_disable_asynccancel (int oldtype)
+ internal_function attribute_hidden;
+
+extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
+extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
+extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
+ const pthread_condattr_t *cond_attr);
+extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
+extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
+ pthread_mutex_t *mutex,
+ const struct timespec *abstime);
+extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
+ pthread_mutex_t *mutex);
+
+extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize,
+ cpu_set_t *cpuset);
+
+/* The two functions are in libc.so and not exported. */
+extern int __libc_enable_asynccancel (void) attribute_hidden;
+extern void __libc_disable_asynccancel (int oldtype)
+ internal_function attribute_hidden;
+
+
+/* The two functions are in librt.so and not exported. */
+extern int __librt_enable_asynccancel (void) attribute_hidden;
+extern void __librt_disable_asynccancel (int oldtype)
+ internal_function attribute_hidden;
+
+#ifdef IS_IN_libpthread
+/* Special versions which use non-exported functions. */
+extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
+ void (*routine) (void *), void *arg)
+ attribute_hidden;
+# undef pthread_cleanup_push
+# define pthread_cleanup_push(routine,arg) \
+ { struct _pthread_cleanup_buffer _buffer; \
+ __pthread_cleanup_push (&_buffer, (routine), (arg));
+
+extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
+ int execute) attribute_hidden;
+# undef pthread_cleanup_pop
+# define pthread_cleanup_pop(execute) \
+ __pthread_cleanup_pop (&_buffer, (execute)); }
+#endif
+
+extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
+ void (*routine) (void *), void *arg);
+extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
+ int execute);
+
+/* Old cleanup interfaces, still used in libc.so. */
+extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
+ void (*routine) (void *), void *arg);
+extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
+ int execute);
+extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
+ void (*routine) (void *), void *arg);
+extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
+ int execute);
+
+extern void __nptl_deallocate_tsd (void) attribute_hidden;
+
+extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
+
+#ifdef SHARED
+# define PTHREAD_STATIC_FN_REQUIRE(name)
+#else
+# define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name);
+#endif
+
+#endif /* pthreadP.h */